* Biology: This is absolutely crucial. A strong understanding of biology is fundamental to medical study.
* Chemistry: Also highly crucial. Chemistry underpins a significant portion of medical knowledge.
* Mathematics: While not always explicitly *required*, a good grade in maths is highly advantageous, as it's used in many aspects of medicine, particularly in pharmacology and statistics.
* English Language: This is almost universally required for entry to medical schools, demonstrating strong communication skills.
While other subjects may be beneficial or even required by specific universities, the above four are the core subjects almost all medical schools will look for. You might see some universities requesting a further GCSE in a science subject (like Physics) or a humanities subject, but biology, chemistry, maths, and English language are the absolute essentials. It's best to check the specific entry requirements of each medical school you intend to apply to.